Appendix A. Species added as seeds to experiments. Origin refers to North American presence. Species in bold are the eight species transplanted to create initial communities, and were also added as seeds.
| Species | Life form | Plant family | Origin |
| Achillea millefolium | forb | Asteraceae | native |
| Andropogon gerardii | C4 bunchgrass | Poaceae | native |
| Bromus inermis | C3 clonal grass | Poaceae | nonnative |
| Bromus kalmii | C3 bunchgrass | Poaceae | native |
| Calamagrostis canadensis | C3 bunchgrass | Poaceae | native |
| Centaurea maculosa | forb | Asteraceae | nonnative |
| Coreopsis lanceolata | forb | Asteraceae | native |
| Dactylis glomerata | C3 bunchgrass | Poaceae | nonnative |
| Desmodium canadensis | legume | Fabaceae | native |
| Echinacea pallida | forb | Asteraceae | native |
| Elymus canadensis | C3 clonal grass | Poaceae | native |
| Lespedeza capitata | legume | Fabaceae | native |
| Liatris aspera | forb | Asteraceae | native |
| Muhlenbergia racemosa | C4 clonal grass | Poaceae | native |
| Panicum virgatum | C4 clonal grass | Poaceae | native |
| Poa pratensis | C3 clonal grass | Poaceae | nonnative |
| Ratibida pinnata | forb | Asteraceae | native |
| Schizachyrium scoparium | C4 bunchgrass | Poaceae | native |
| Solidago nemoralis | forb | Asteraceae | native |